| Title |
Design of LCL Filter through Inductor Optimization Method in Grid-Connected Inverter |
| Authors |
Jae-Ha Jang ; Kyeong-Hwa Kim |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.11.058 |
| Keywords |
Grid-connected Inverter ; Inductor Optimization ; LCL Filter Design ; Magnetic Core ; Renewable Energy |
| Abstract |
A grid-connected inverter used for renewable energy resources produces harmonic components in the switching frequency. To effectively reduce switching harmonic components, several types of filter are generally used in the output stage of the grid-connected inverter. Many research works on LCL filter design have been done to maintain the performance with low cost. However, it is not easy to make the filter design be economical and optimal due to the varying characteristic of magnetic core and redundancy design by experience. In this paper, a design method for a LCL filter is presented through the inductor optimization scheme in view of the size and cost when the inductor is manufactured using the magnetic core. The effectiveness is verified through tests using a 3kW grid-connected inverter by simulations and experiments. |